Amazon.com
- 2-Pack TP-Link Wifi Smart Plugs for $25
Two-pack of TP-Link HS103 12-Amp Kasa Compact Wifi Smart Plugs for $30, and click the $5 Off Coupon under the price to get it for $25.
This is the old version of TP-Link's Smart Plugs.
For a deal on the latest version, B&H Photo is selling a 3-Pack TP-Link HS105 10-Amp Kasa Compact Wifi Smart Plugs
for $38, which comes out to about the same price as the HS103 per unit.
Normally $55.
However, the specs on the HS103 look a little better, able to handle 12-Amp of power versus 10-Amp on the HS105.
These are small enough to plug multiple into the same outlet or power strip.
For another similar deal on a lesser-known brand, a 4-Pack of Meross 16-Amp Wifi Smart Plugs is $30 ($7.50 each).

Newegg.com
- 2-Pack TP-Link Smart Light Switches With Dimmer for $56
Two-pack of TP-Link HS220 Smart Wifi Light Switches with Dimmer for $56 ($28 each).
It normally sells for about $35 each.
This price is expected to last until Thursday, unless it sells-out before then.
For non-dimming switches (on/off ony), Amazon is running a deal on a 3-Pack TP-Link HS200 Wifi Light Switches for $60 ($20 each).
Note that three-way lights will not work with these models.
If you have an upstairs switch and a downstairs switch that both control the same lights, get the TP-Link HS210 3-Way Kit which goes for $50.25.